Final answer:
The National Cancer Data Base is both a population-based incidence database and a nationwide outcomes database.
Step-by-step explanation:
The National Cancer Data Base is both a population-based incidence database and a nationwide outcomes database.
The National Cancer Data Base (NCDB) is a comprehensive database that collects and analyzes data on cancer patients from hundreds of hospitals across the United States.
By collecting and analyzing data on cancer patients, the NCDB helps researchers and healthcare professionals understand trends in cancer occurrence, treatment outcomes, and patient survival rates.